The universe is shivered into a multitude of disconnected substantial things, each thing in its own way exemplifying its private bundle of abstract characters which have found a common home in its own substantial individuality. But substantial thing cannot call unto substantial thing. A substantial thing can acquire a quality, a credit--but real landed estate, never. In this way, Aristotle's doctrines of Predication and of Primary Substance have issued into a doctrine of the conjunction of attributes and of the disjunction of primary substances.
All modern epistemologies, all modern cosmologies, wrestle with this problem. There is, for their doctrine, a mysterious reality in the background, intrinsically unknowable by any direct intercourse. In the foreground of direct enjoyment, there is the play and interplay of various qualities diversifying the surface of the substantial unity of the solitary individual in question.
But one characteristic of each experiencing subject is a mysterious impulse to interpret its private world of enjoyed qualifications as indicating and symbolically defining a complex of communication between ultimate realities. Yet, according to the doctrine of these modern cosmologies, the how, or the why, of such communication must forever lie beyond reason: for reason can only discern the set of qualities constituting the nature of an individual substance.
Such has been the long slow influence of Aristotelian Logic upon cosmological theory.